As a trader, the most important thing you need is not to be greedy. Its no news that coins will appreciate and depreciate. So you must learn to take your profits even with low percentage. It doesn't have to be 100% increment before you take your profits.
You also need to stay abreast of rise and fall of the prices. A good internet facility to track rise and fall of prices is fundamental.
People have greed in them naturally, but ability not to control is s what becomes a problem, and this is why many analyst would advise that before getting into a trade, we have to learn to always try to control our emotion first at any point in time, if we can control our emotion about greed, then I doubt if there is any increase opportunity that will pass a trader by, and if we find it difficult to control our emotion, I think that there has been lost of tools that has been created like that of stop loss and take profit that can assist us in learning how to control our greed if we can always set It.
When I first started my own trade too, I found it very difficult to really control my greed, and pending the time that I was learning to naturally control it, it was this stop loss and take profit tool that I was using.